Fuses & Circuit Breakers

Although they work in different ways, fuses and circuit breakers broadly have the same purpose; to protect electrical appliances and electrical circuits from short circuits, and excessive current (called overcurrent or overload).

Fuses

Fuses are relatively low cost electrical safety devices. If too much current enters the circuit, the fuse will burn out (sometimes called blowing out). When the fuse blows out it breaks the circuit. This protects the attached devices and allows you to touch devices without being electrocuted. When the fuse blows, it must be replaced before using the device or appliance again.

Circuit breakers

Circuit breakers work in a similar way to fuses, but they are resettable. Once a fault is detected (this is typically a short circuit or an excessive amount of current flowing through the circuit) the circuit breaker will interrupt the flow of current. When the circuit breaker trips, it's simply a case of flicking a switch to reset the circuit breaker. As soon as you've reset the circuit breaker, it is ready to use again.

50958 Products showing for Fuses & Circuit Breakers

719 of 999+
  • RS Stock No. 259-336
  • Mfr. Part No. 269301 NZMN3-AE600-NA
Each
£2,796.77
  • RS Stock No. 203-687
  • Mfr. Part No. 2CDS381103R0981
Each
£87.77
Better World
  • RS Stock No. 232-2290
  • Mfr. Part No. 5SY4204-6
Each
£69.88
  • RS Stock No. 622-0705
  • Mfr. Part No. 5SG1301
Each
£13.36
  • RS Stock No. 236-6639
  • Mfr. Part No. 1SDA068191R1 XT2 P FP HR
Each
£274.19
  • RS Stock No. 152-952
  • Mfr. Part No. 3NA3232-4KK02
Each
£41.91
  • RS Stock No. 203-1965
  • Mfr. Part No. 3NA7122
Each (In a Pack of 3)
£11.713
  • RS Stock No. 174-5489
  • Mfr. Part No. 3-104-513
Each (In a Bag of 5)
£2.486
  • RS Stock No. 261-986
  • Mfr. Part No. TCF20RNW
1 Pack of 12
£720.70
Better World
  • RS Stock No. 209-4886
  • Mfr. Part No. 3VA1112-4EF32-0AA0
Each
£603.94
  • RS Stock No. 156-8866
  • Mfr. Part No. 6CT
Each (In a Pack of 5)
£4.32
  • RS Stock No. 851-1246
  • Mfr. Part No. FNQ-6
Each
£49.34
  • RS Stock No. 173-7970
  • Mfr. Part No. 0090.0025
Each (In a Box of 10)
£15.745
Better World
  • RS Stock No. 238-3504
  • Mfr. Part No. A9Y63340
Each
£250.91
  • RS Stock No. 260-8163
  • Mfr. Part No. C40V46E400
Each
£5,338.74
  • RS Stock No. 541-3287P
  • Mfr. Part No. 251002.NRT1L
Each (Supplied in a Bag)
£0.814
  • RS Stock No. 221-5621
  • Mfr. Part No. 3-128-231
Each
£16.16
  • RS Stock No. 259-313
  • Mfr. Part No. 290227 PXF-63/4/03-S/A-BRD
Each
£352.04
  • RS Stock No. 259-155
  • Mfr. Part No. 283869 XBSB324
Each
£221.09
  • RS Stock No. 129-796
  • Mfr. Part No. 1212685
Each
£7.22
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